Ingot-mold.



E. GATHMANN.

lNGoT MOLD.

APPLICATlON FILED FEB. ll 1915.

1,258,209. Patented Mar. 5,1918.

2 SHEETS-SHEET I. 6' @l Z W I j y? 257257 QQM.

E. GATHNIANN.

INGOT MOLD. APPucATlN man res. 11. 191s.

Patented Mar. 5, 1918.

` 2 SHEETS-SHEET 2- UNITED sTATEs EMIL GATHMANN, 0F BALTIMORE, MARYLAND.

INGOT-MOLD.

Specication of Letters Patent.

Patented Mar. 5', 191s.

Application filed February 11, 1915. Serial No. 7,595.

To all whom z'* may concern.'

Be it'known that I, EMIL GATHMANN, a. citizen of the United States,residing-inthe city of Baltimore and State of Maryland, have inventedcertain new and useful Improvements in Ingot-Molds, ofwhich thefollowingis a specication.

This invention relates particularly lto molds for casting steel ingotsand especially to the sink heads or feeders for such molds, but myimprovements may be employed in connection with molds for forming otherkinds of castings. y

In several vU. S. Letters Patent heretofore granted to me I have shownmolds for casting steel ingots in which provision is made for conservingthe heat of the molten metal at its upper portion and for promoting thecooling of the lower portion of the ingot or casting, and myimprovements are especially intended for use in connection with suchmolds although they may be used in connection with molds of otherdesifrns.

U.' S. Letters Patent have heretofore been granted to me forimprovements in sink heads or feeders which have been found to be veryuseful and to assist materially in the formation of sound ingots,

and the object of my present invention is to improve the construction ofsuch sink heads or feeders, and to provide novel means for holding themin place.

According to my present invention I form the sink head or feeder ofsuitable refractory material such as fire brick and construct it insections which may be readily molded and baked, and I provide novelmeans for holding these sections in place when applied to a mold.

My invention also involves means for preventing the formation oflaterally projectingns on the ingot which would tend to impede orprevent the stripping of the in ot from the mold.

In the accompanying drawings Figure 1 shows a vertical central'sectionthrough an ingot mold and feeder, embodying my improvements.

Fig. 2 is a plan view thereof. l

Fig. 3 is a perspective view of one of the feeder sections.

Fig. shows a vertical central section throu h the upper part of a moldand feeder lembo ying my improvements in a modified form.

Fig. 5 is a top view thereof.

Fig. 6 shows a vertical central sectionl struction, either a. big-end upor a big-end down mold or a mold having a cavity whose cross section isuniform. The drawings show a big-end down mold whose walls are madethicker in their lower portion in order to absorb heat more rapidly fromthe lower portion of the ingot than fromthe upper portion thereof, whilethe neck of the mold a has relati\ ely thin walls and is therefore lessabsorptive, thus serving to conserve the heat of the ingot at its upperend. The mold Y lmay be formed with ears a to facilitate in lifting it.v .y

The `feeder B comprises a feeder proper Ba; and a surrounding casingBt ying is preferably made of metal while lthe feeder proper is preferablymade of re brick or of other suitable refractoi'yinsul'ating material.'The base b4 ofthe casing is The cas- Y' adapted to rest on the top ofthe moldiA. i i

Said base `is formed with a downwardly proj ecting ange or bead y whichpreventsithe molten metal from passing out laterally over the top of themold and under the base p of the casing. In this way the formation of aiin which would impede the strippin of the ingot from the mold isprevente The side walls b3 of the casing' may be slightly flared, a'sshown, and air inlet opengings b2 are formed in the base of the casingfor a purpose hereinafter described. TheA^ feeder proper, as beforestated, is made in sections of refractory material. Preferably four suchsections b5 are employed having mitered joints z, as indicated. Eachfeeder section is also preferably formed with enlargements or bosses bto receive set screws C, extending through threaded openings in thecasing B and engaging said bosses. By adjusting the set screws thefeeder sections may be pressed closely together at the joints. Insteadof using set screws I may employ wedges C', as indicated in Fig. 2, fora simi-i lar purpose. It will be observed that the x cavity of thefeeder tapers from its lower end upwardly so that after the ingot isformed the feeder may be lifted and stripped from the ingot, and it willbe further observed that there are no such shoulders in any part of thefeeder as would prevent it from being stripped from the ingot. Theexterior'diameter of the feeder is considerf ably less than the interiordiameter of the casing, thus forming a chamber H which may receiveinsulating material or fuel which may be. ignited and fed with airthrough the openings b2. In this way the radiation of heat from theupper portion of the ingot may be delayed, and therefore the moltenmetal is maintained in a fluid conthe purpose hereinbefore described.`Thethe inold cavity and serving the same purl pose as the ange or bead yshown inF ig. 1. The cavity of the feedertapers upwardly for casing D?in this case is made integrally with theV mold A.v It is' provided withairy linlet openingsd3 and it` carries set, screws E similar tothosebeforedescribed and which serve to hold the feeder sections inclose contact with eachother at the shouldered jointsy. There is achamber I between the feeder and the casing D4 which may containinsulating lmaterial or fuel, for the purpose before described. In otherrespects the mold "and feeder are similar tothose shown in Fig. 1 of thedrawings. By these improvements the feeder may be economically made andmay be readily and securelyy attached to the mold or supported thereon..The means employed for holding the feeder sections `in place beingadjustable good joints are assured. The formation of tins is preventedandthestripping -of-the ingot from the'mold is facilitated.

I'usually apply lutinglor fire clay or like -material between the flangey and the adjacent mold wall and a similar luting may be applied betweenthe iange a: and the casing. Such lutin'g 'is employed when 'anyroughness is present at these joints.

It will be understood that a distinct advantage is gained by making thefeeder in sections andy joining them at the corners. The sections may bevery readily molded and baked much more easily than if the feeder ismade in one solid piece, and a better joint or union can be obtained atthe corners than elsewhere. Furthermore, this construction permits of amore efcient cen-A tering of the feeder sectionsl in the top of themold. In use the feeder expands when tion so that a close contact may beobtained p at each joint.

I claim as my invention:

1. The combination with an ingotI mold, of a feeder resting on the topof the mold and formed in four sections joined at the corners, each ofsaidsections having a downwardly projectingiflange or bead at'the base'extending into the mold, a metallic casing for said sections, andadjustable means for holding the'feeder sections in close contact 'witheach other.

2. The combination with an ingot mold of a feeder made in sectionsjoined at the corners and provided\with a downwardly projecting flangeor beadr at the base, a casing surrounding the feeder, and adjustablemeans interposed between the casing and thev feeder for holding thefeeder sections in position. l j

3. .The combination with -an ingot mold of a feeder therefor madeinsections joined at 'the corners and removable from the mold, andadjustable means acting independently upon each section for holding saidsections in contact with each other.

4. The combination-[with an ingot mold, of a feeder resting on the topofthe mold formed'in sections joined at the corners', each of saidsections having a downwardly lprojecting ang'e or beadV at the baseextending into the mold and independently adjustable means operatingupon each section for holding the feeder sections in close contact witheachother at the joints.

5. The combination with an ingot mold of a feeder therefor, refractorymaterial joine metallic casing forsaid sections resting on the top ofthe mold and removable therefrom, and adjustable means carried by thecasing and acting independentlyfupon each section lfor Vholding saidsections in contact with each other.

6. The combination withv an ingot mold of comprising sections of at thecorners, a

a feeder therefor, 'comprising a vmetallic:

ing resting on the'top of the mold and a plurality of sections ofrefractory' material within the casing supportedby the casing and joinedtogether at their vertical'edges adjacent to the corners thereof andremovable therewith from the mold, each of said sections beingcontinuous or inone unbroken .piece from topto bottom.

' 8. The combination with an ingotfmold of a feeder therefor, comprisinga metallic casing resting on the top of the mold and a plurality ofsections of refractory material within the casing supported-by thecasing and bevel-jointed together at their vertical edges adjacent tothe metallic casing corners and removable therewith from the mol-d,

subscribed my name.

each of said sections being continuous or in one unbrokenpiece from topto bottom.

9. The combmation with an ingot mold of afeeder therefor, comprising ametallic cas- 20 ing resting on the top of the mold, and sec- .tions 'ofrefractory non-conductin material within the casing supported there yand re? movable therewith from the mold, each of said sections beingcontinuous or in one un- 25 broken piece from top to bottom.

In testimony rwhereof, I haveI hereunto j EMIL GATHMANN.

-Witnesses:

MAMIE MEwsHAW, JOHN S. REID.

